Inject GPUDataManager support into ash to abstract a content dependency.

ash/content_support/inject.h

Index: ash/content_support/inject.h
diff --git a/ash/content_support/inject.h b/ash/content_support/inject.h
new file mode 100644
index 0000000000000000000000000000000000000000..b821029719bd96839436773cc6ef9c242f773124
--- /dev/null
+++ b/ash/content_support/inject.h
@@ -0,0 +1,16 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef ASH_CONTENT_SUPPORT_INJECT_H_
+#define ASH_CONTENT_SUPPORT_INJECT_H_
+
+#include "ash/content_support/ash_with_content_export.h"
+
+namespace ash {
+
+ASH_WITH_CONTENT_EXPORT void InitContentSupport();
+
+}  // namespace ash
+
+#endif  // ASH_CONTENT_SUPPORT_INJECT_H_